Preheat your oven to 350°F (175°C). Grease and flour a bundt pan.
In a mixing bowl, cream together the butter and sugar until light and fluffy.
Add the eggs one at a time, beating well after each addition.
Mix in the lemon juice and lemon zest.
In another bowl, whisk together the flour, baking powder, and salt.
Gradually add the dry ingredients to the wet ingredients, alternating with the milk. Begin and end with the dry ingredients.
Pour the batter into the prepared bundt pan and smooth the top.
Bake for 50 minutes, or until a toothpick inserted into the center comes out clean.
Let the cake cool in the pan for 10 minutes, then turn out onto a wire rack to cool completely.